VS2015bug ->const char[]+string后开头多了“？”符号

string+char[]相加后输出

cv::Mat frame = imread(files[i].c_str());
		char str[25] = { 0 };
		sprintf(str, "%d", i);
		cout << "‪C:\\Users\\m1873\\Desktop\\newout\\" + (std::string)str << endl;//luji

解决办法 string + string

 char str[25] = { 0 };
    sprintf(str, "%d", i);
	string base_out_path = "C:\\Users\\m1873\\Desktop\\newout\\";
	cout << base_out_path + (std::string)str << endl;//luji